Anyone remember EQ language lessons?

[realityincarnate]

I've been working on adding the ability to learn languages from other characters to my server code. I think I've mostly got it, but I've run into a couple of things that I just don't remember all that well (it's been many years since I played Live), and I was wondering if anyone knows the following:

1. Could you gain language skill from "say" messages, or was it only group chat? (I know tells didn't work)

2. About how quickly did the skill improve? (Once every 100 messages? 500? 1000?) And did it take more messages at higher skill levels?

Thanks for anything you happen to remember.